AFTER BEING TOLD (INCORRECTLY) MANY TIMES THAT I HAD NOT ANSWERED VERIFICATION QUESTIONS CORRECTLY, I CHANGED THE YEAR TO 2023 AND IT WORKED. I THINK YOU NEED TO UPDATE YOUR SYSTEM, AVAST.
There are several topics already about this issue. But not solution or cause (forum software or Administrator) has been defined.
This is just one of them - https://forum.avast.com/index.php?topic=325923.0
However, you should soon be over this hurdle (anti spam measure) if you reply to this post (or your other post) you would have 3 posts, after which validation ends.